280212100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{349}}^1$

素因数の和:438

約数の個数: 144

約数和(自身を含む): 738841600

約数和(自身を除く): 458629500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 31, 35, 37, 50, 62, 70, 74, 100, 124, 140, 148, 155, 175, 185, 217, 259, 310, 349, 350, 370, 434, 518, 620, 698, 700, 740, 775, 868, 925, 1036, 1085, 1147, 1295, 1396, 1550, 1745, 1850, 2170, 2294, 2443, 2590, 3100, 3490, 3700, 4340, 4588, 4886, 5180, 5425, 5735, 6475, 6980, 8029, 8725, 9772, 10819, 10850, 11470, 12215, 12913, 12950, 16058, 17450, 21638, 21700, 22940, 24430, 25826, 25900, 28675, 32116, 34900, 40145, 43276, 48860, 51652, 54095, 57350, 61075, 64565, 75733, 80290, 90391, 108190, 114700, 122150, 129130, 151466, 160580, 180782, 200725, 216380, 244300, 258260, 270475, 302932, 322825, 361564, 378665, 400303, 401450, 451955, 540950, 645650, 757330, 800606, 802900, 903910, 1081900, 1291300, 1514660, 1601212, 1807820, 1893325, 2001515, 2259775, 2802121, 3786650, 4003030, 4519550, 5604242, 7573300, 8006060, 9039100, 10007575, 11208484, 14010605, 20015150, 28021210, 40030300, 56042420, 70053025, 140106050, 280212100]

約数ペア:

[(1, 280212100), (2, 140106050), (4, 70053025), (5, 56042420), (7, 40030300), (10, 28021210), (14, 20015150), (20, 14010605), (25, 11208484), (28, 10007575), (31, 9039100), (35, 8006060), (37, 7573300), (50, 5604242), (62, 4519550), (70, 4003030), (74, 3786650), (100, 2802121), (124, 2259775), (140, 2001515), (148, 1893325), (155, 1807820), (175, 1601212), (185, 1514660), (217, 1291300), (259, 1081900), (310, 903910), (349, 802900), (350, 800606), (370, 757330), (434, 645650), (518, 540950), (620, 451955), (698, 401450), (700, 400303), (740, 378665), (775, 361564), (868, 322825), (925, 302932), (1036, 270475), (1085, 258260), (1147, 244300), (1295, 216380), (1396, 200725), (1550, 180782), (1745, 160580), (1850, 151466), (2170, 129130), (2294, 122150), (2443, 114700), (2590, 108190), (3100, 90391), (3490, 80290), (3700, 75733), (4340, 64565), (4588, 61075), (4886, 57350), (5180, 54095), (5425, 51652), (5735, 48860), (6475, 43276), (6980, 40145), (8029, 34900), (8725, 32116), (9772, 28675), (10819, 25900), (10850, 25826), (11470, 24430), (12215, 22940), (12913, 21700), (12950, 21638), (16058, 17450)]